/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

package org.netbeans.modules.groovy.refactoring.findusages.impl;

import java.util.HashSet;
import java.util.Set;
import org.codehaus.groovy.ast.*;
import org.codehaus.groovy.control.SourceUnit;

/**
 *
 * @author Martin Janicek
 */
public abstract class AbstractFindUsagesVisitor extends ClassCodeVisitorSupport {

    protected final ModuleNode moduleNode;
    protected final Set<ASTNode> usages;


    public AbstractFindUsagesVisitor(ModuleNode moduleNode) {
        this.moduleNode = moduleNode;
        this.usages = new HashSet<ASTNode>();
    }

    public Set<ASTNode> findUsages() {
        if (moduleNode != null) {
            for (Object object : moduleNode.getClasses()) {
                visitClass((ClassNode) object);
            }
        }
        return usages;
    }

    @Override
    protected SourceUnit getSourceUnit() {
        return moduleNode.getContext();
    }
}